正确认识地震据中国地震网测定,当地时间3月11日14时46分,日本发生里氏9.0级地震,震中位于宫城县以东太平洋海域,震源深度10公里,地震引发了海啸。因为强震,导致11日地球自转快了1.6微秒,比去年智利地震所造成的影响还大一点。这次大地震被列为全球有记录以来的第五大地震,推动了日本本岛平移了2.4米。11日强震以来,共发生至少168次里氏5级以上的余震,今后此类余震将持续至少1个月 Correct understanding of the earthquake According to the China Earthquake Network, local time at 14:46 on March 11, Japan 9.0 magnitude earthquake, the epicenter is located in the Pacific Ocean east of Miyagi Prefecture, the focal depth of 10 km, the earthquake triggered a tsunami. Because of the strong earthquake, the earth swerved by 1.6 microseconds on the 11th, more than the impact caused by the Chilean earthquake last year. The earthquake was listed as the world’s fifth largest earthquake ever since, marking a shift of 2.4 meters on the island of Japan. Since the strong earthquake on the 11th, a total of at least 168 aftershocks of magnitude 5 or above have occurred, and such aftershocks will continue for at least one month